Vacuum-producing apparatus.



'. [L LUGAR-N( VACUUM TRODUGING APPARATUS.

APrLmmloN FILED JULY s1. una

l, l 5% ateuted Aug. 25, 1914.

FERDINAND A. WEIMANN, F "WEST HBDKEN', NEW JERSEY.

VACUUM-PRODUCING APPARATUS.

Specification-of Letters atent.

rammed aug. 25, i914.

Application filed July 21, 1912. Serial No. 712,449.

a full, clear, and exact description.

rlhe object of the invention is to provide 'ncvvv and improved vacuumproducing apparatus, more especially designed. tor use in i vacuumcleaning systems and arranged to readily draw air and dust through thehouse pipe to slime the dust, and separate the air from the slimed dust,and to permit of using the Water for sliming the dust over and overagain.

vFor the purpose mentioned use is made of 'a-discharge nozzle having anannular passage connecting at one end with a chamber connected with thehouse pipe, and a water supply nozzle having an annular passage openingint-o the said chamber directly opposite the entrance end of the saidldischarge nozzle A practical embodiment of the invention is representedin the accompanying drawings Forming a part of this specication, inwhich similar characters of referenceindicate corresponding parts in allthe views. Figure 1 is a side elevation o'f a vacuum prodiicingapparatus and showing a portion of the Water tank broken out; Fig. 2 isan enlarged sectional side elevationot the injector; and Fig. 3 is anenlarged sectional plan view of the same on the line-.B of

a J"ank A for containing Water is connected at its lower end with thesuction pipe il ot a pump C, preferably of the 'rotary viven from asuitable motor D.

'un pipe E of the pump C conian injector F having a discharge t;connected with the upper end 'of the fl., The injector F is alsoconnected tfae house pipe provided With thelar passage O of a nozzleformed of tivo cont centric rings I and P', ot Which the ring l? screws1n 'the casing L and the ring P is provided at the top with a spider l2and at the bottom with a hollow stem P3 screwing in the casing L andleading to an air admission pipe H similar to the house pipe H butconsiderably smaller, and likewise provided with a check valve (notshown) the .same as the valve l, a strainer J and a Yalve K".

From the top of the annular chamber N leads anannular passage Q of anozzle formed of an outer ringshaped part R and an inner part R providedat the bottom with a stem R2 screwing centrally in theA spider P2 of thering-shaped member P of the Water discharge nozzle. The outer ringshapedpart yR of the discharge nozzle is providedv at the top with a flange R3seated on the casing L and held in place by the pipe Gr. Now bythearrangement described it will be seen that both passages O and' Q areannular and Wholly unobstructed so that Water passing through thepassage *O is forced through the chamber N into the passage Q, and in'doing so a suction is produced in the house pipe H to'draw the air anddust l through the said pipe into the chamber N to mix with the Waterfrom the Water discharge nozzle. rlhe water, air and vdust that have notbecome slimcd. When the pipe G to be finally delivered to the upper endof the tank A. In this tank the Water With the dust slimed thereinseparates from the air Which can readily escape through the top of thetank A and which top is preferably provided with a strainer A to preventthe escape of the particles of dust that have not become slimed. llVhenthe valve K in the air admission. pipe H is opened then air is alsodrawn' into the chamber Nby Way of the hollow stem P and thering-shapedinner member P of' the Water discharge nozzle. This air alsomingleswith the Water in the chamber and passes with the Water throughthe passage Q into the pipe G andinto the tank A. The passage isgradually contracted toward the chamber'N while t e passage Q has itslovver portion provided with converging ,sl-les and the upper portionwith beveled sidesas'ivill be-readily understood by reference to Fig. 2,so that the air and dust readily pass into the passage Q and areiorced'through the same by the Water pass ing through the passage ItWill also be :noticed that the Water is drawn from the tank i and isforced by the pump C through. the injector F and pipe C back into thetank il., to be used over and over again. ln. case tlie 'water in thetank becomes too muddy 'with the dust, it is replaced with fresh water.Suitable means are provided for iilling` and emptying the tank A. andfor maintaining a uniform level of the Water i a suitable overiiow.

'pibe injector shown and described 1S Very simple and durable11i-construction, can be c imply manufactured, and the parte tliereoi`ai ijiotliable easily to get out of order.

no vaciunn producing apparatus has aboiviji and described in. connectionwith a vacurn cleaning system, but it may be usted :for other purposes,for instance7 removing the condensation and air in Vacuum beatingSystems.

Having illus described my invention, lf

claim as 'new and desire to secure by Let-y ters lfatent: v l v l. Avacuum producing` apparatus provided with :teasing having` a Waterinlet, an air and duet inlet, a Water supply nozzle connected with thesaid Water inlet and iloiinicdoi' twoconcentric parts seemed in thecasing and spaced apart to forni lau unobstructed annular passage, adis'iiargc nozzle Within the casing and spacdlfroin the said Waterinletnozzle lo forni a chamber connected with the' said and dust inlet, thesaid discharge nozzle' Linnea-4l being:` made oi' two conce/miic parteepaceo apart to forni an unobetructed annular pas.

sage, the outer concentric part of 'the discharge nozzle being held onthe casing and the other being attached to the inner part of the saidwater supply nozzle.

2. A vacuum. producing apparatus provided Witli a caeing having a 'waterinlet7 an air and dust inlet and an outlet for the Water, air and duet,a water supply nozzle connected with tbe said Water inlet and formed oitivo concentric parte secured in the casing and spaced apart to forni anunobstructed annular paesage, the inner con nitric part oii 'llie Waltersupply nozzle 'loeu ing hollow and connected with an air supply, adischarge nozzle Within the casing and spaced 'from the said Water inletnozzle to iorin a cbainbci' connected with 'the said airand duet inlet,tile Said discharge nozzle

